Check-valve for steam-boiler water-gages.



W. D. GELSER.

CHEGK VALVE FOR STEAM BOILER WATER GAGES.

APPLIUATION rum) we. 2a, 1908.

908,240. Patented Dec. 29, 1908.

2 SHEETS-SHEET 1.

THE mamas PETERS co, wnsumaroul n, c.

W. D. GELSER. CHECK VALVE FOB. STEAM BOILER WATER GAGES.

APPLIOATION FILED AUG.28, 1908. 908,240. Patented Dec. 29, 1908. 2 SHEETS-SHEET 2.

UNITE STATES PATENT OFFICE.

WALTER D. GELSER, OF HUNT, NEW YORK.

CHE GK-VALVE FOR STE AM-B OILER WATElit-GnAGrES.

To all whom it may concern:

Be it known that I, WALTER D. GELsEn, a citizen of the United States, residing at Hunt, in the county of Livingston and State of New York, have invented certain new and useful Im rovements in Check-Valves for Steam-Boi er Water-Gages; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in check valves for steam boiler water gages, and has for its object to provide a valve of this type for cuttin off the escape of water or steam from the boiler should the water gage break.

With these and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a front elevation of a boiler equipped with my improvement; Fig. 2 is a central longitudinal section taken through the upper check valve; Fig. 3 is a vertical section taken on line 33 of Fig. 2; and Fig. 4 a horizontal section taken on line 44 of Fig. 2.

In the embodiment illustrated 1 indicates a boiler of any ordinary pattern, 2 the water gage and 3 the improved check valve. As shown in the drawings, the check valve comprises a suitable casing 4 provided at one end with a threaded tubular stem 5, which is screwed into the wall of the boiler. The opposite end of the casing is provided with a tubular exteriorly threaded stem 7, which screws into the stop cock or valve 8 of the water gage. Said stem is formed at the outer end of an exteriorly threaded plug 9, which screws into the outer end wall of the valve casing. As shown, the inner end of this plug is provided with a pair of laterally spaced apertured cars 10, adapted to receive a tubular extension 11 formed at the up er end of the check valve 12. As shown, tiis valve comprises an outer end wall 13 provided with a cylindrical portion 14, adapted to enter the bore of the plug 9, a bottom wall 15 and side walls 16. The side edges of the bottom wall extend beyond the side walls and fprovide engaging flanges 17,.the purpose 0 which will be disclosed. This Specification of Letters Patent.

Application filed August 28, 1908.

Patented Dec. 29, 1908.

Serial No. 450,922.

valve is pivotally mounted at the inner end of the plug 9 by inserting the tubular portion thereof between the ears of said plug and inserting a coupling pin 18 through said apertures and extension.

An operating shaft 20 extends through the side walls of the casing, one end of the shaft extending into a plug 21, screwed into one side wall of the casing, and the opposite end of said shaft projecting a suitable distance beyond the other side wall of the casing. This shaft is provided at points within the casing with a pair of parallel spaced eccentrics 22, provided with outer beveled ends 23 adapted to engage the flanges 17 of the check valve 12 when the shaft is turned to bring the eccentrics in a vertical position, under which conditions the check valve is held open as will be understood. A suitable bearing 24 is screwed into one side wall of the casing to receive the operating shaft, and a gland or plug 25 screwed into the bearing to provide a water tight joint, as will be understood. A handle 26 is arranged at the projecting end of the operating shaft to provide for the manipulation of the latter, and a drain cook 27 screwed into the bottom wall of the casing. As shown in the drawings,

the check valve is arranged at both the steam and water ends of the gage, and should the gage break, the operating shafts 20 are turned by means of the handles 26 to swing the eccentrics into an approximately horizontal position out of engagement with the engaging flanges of the check valves, as indicated in Fig. 2 of the drawings, when the latter will be instantly closed by the water and steam passing out of the boiler into the check valve casings, the cylindrical portions 14 of the outer end walls 13 of the check valves entering the bores of the plugs 9 and thus checking any outflow of water or steam from the boiler during the operation of the replac- Having thus described my invention, What I claim and desire to secure by Letters- Patent, is

1. A check valve comprising a casing, a tubular plug screwing into one wall of the casing, a check valve provided at opposite sides with engaging flanges, pivotally mounted at the inner end of the plug, and a shaft having a pair of eccentrics to engage the flanges of the check valve.

2. A check valve of the type described comprising a valve casing provided at one end with a tubular threaded extension, a plug provided with a tubular eXteriorly threaded extension screwing into one Wall of the valve casing, a check valve provided with an approximately cylindrical portion to enter the bore of said plug, pivotally mounted at the inner end thereof, said valve having laterally projected flanges at opposite sides, an operating shaft having a pair of laterally spaced eccentrics to engage the flanges of the c ieck valve, and a handle at one end of said shaft.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

WALTER D. GELSER.

Witnesses:

WILL O. DOUGLASS, JAY E. LYON. 

